Cleaned up Cascalog and subproject deps - simpler install on cluster; bumped to 1.10.2

Due to an older dep issue, on the cluster we were cloning the cascalog repo and installing it by hand. This bumps the Cascalog version to `1.10.2` and cleans up the `cascalog-checkpoint` and `midje-cascalog` deps to match the new Cascalog project structure.